Gas engine having intercooler

Inactive Publication Date: 2013-03-21
MITSUBISHI HEAVY IND LTD
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  • Abstract
  • Description
  • Claims
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Benefits of technology

[0028]With such a configuration, the fuel gas having a lower specific gravity than air is separated from the pre-mixed gas mixture in the vapor-liquid separator, and as the fuel gas is separated upward, it flows spontaneously into the intake passage formed by the intake passage forming member, so that the apparatus can be made simpler and the cost can be reduced.
[0029]According to the present invention, fuel gas and moisture are separated from the intake gas mixture that contains the fuel gas and that is discharged from the intercooler together with water that has

Problems solved by technology

In an engine using a low energy gas such as methane as fuel, the amount of fuel supplied to the respective cylinders from fuel gas supply solenoid valves is insufficient, and the shortage needs to

Method used

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  • Gas engine having intercooler
  • Gas engine having intercooler
  • Gas engine having intercooler

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Embodiment Construction

[0035]The illustrated embodiments of the present invention will be hereinafter described in detail.

[0036]It should be noted that, unless otherwise specified, the size, material, shape, and relative arrangement or the like of constituent components described in these embodiments are only illustrative examples and not intended to limit the scope of this invention.

[0037]One embodiment of the gas engine according to the present invention will be described with reference to FIG. 1 to FIG. 3.

[0038]The power generating gas engine 1 of this embodiment is installed near a coal mine, and uses methane gas emitted from a coal mine as fuel gas and intake gas. In FIG. 1, a generator 10 is coupled to an output shaft 15 of the power generating gas engine 1 (hereinafter referred to as gas engine 1).

[0039]An oil bath filter 61 is disposed in an intake system upstream of an intake pipe 6 which is an intake passage forming member connected to the gas engine 1. Ventilation air methane VAM gas released t...

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Abstract

In a gas engine 1 that uses a gas having a lower specific gravity than air and has a pre-mixing device before a turbocharger, a pre-mixed gas mixture compressed by a turbocharger 3 is cooled by an intercooler 4 located downstream of the turbocharger 3 in the intake system. Condensed water produced as the gas is cooled and the pre-mixed gas mixture discharged with the condensed water are separated into condensed water, air, and fuel gas in a vapor-liquid separator 7. The fuel gas is returned to the intake system upstream of the turbocharger 3, while the condensed water is discharged to atmosphere.

Description

TECHNICAL FIELD[0001]The present invention relates to a gas engine that has an intercooler and makes effective use of natural gas, biogas, or methane gas emitted from coal mines or the like as intake gas or fuel.BACKGROUND ART[0002]The world's interest in restrictions on emissions of green house gases such as methane CH4 and carbon dioxide CO2 has been increasing over the years. Methane CH4, in particular, is 21 times more potent than carbon dioxide CO2 in driving the global warming, and therefore emissions of methane CH4 to atmosphere should not be left unnoticed. In the meantime, a large amount of methane CH4, as much as 10 to 40 Nm3 (pure methane) per ton of coal, is being released during coal mining from a coal mine.[0003]Coal mines emit two types of methane CH4 gas: CMM (Coal Mine Methane) gas (with a concentration of about 30 to 50 wt %), existing in and recovered from coal seams through degassing bore holes using vacuum pumps for safety reasons, and VAM (Ventilation Air Metha...

Claims

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Application Information

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IPC IPC(8): F02M31/20F02B37/00
CPCF02M33/04Y02T10/146Y02T10/32F02B29/0406F02B29/0468F02D19/027F02B37/00F02M31/20F02M21/047F02M21/0284F02M21/0215Y02T10/12Y02T10/30F02B29/04F02M21/02
Inventor NISHIO, HIDEKISUZUKI, HAJIMESHIMIZU, YUUICHI
Owner MITSUBISHI HEAVY IND LTD
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